Hello.
We would like to spend time in Barcelona, Madrid, and Seville for about two weeks. We plan to travel via train once we arrive from San Francisco. I know that ideally, we include Madrid Airport as a departure or arrival city along with Barcelona Airport. But, if we just fly in and out of Barcelona Airport (so we can do nonstop on United), what ordering would you recommend for visiting the three cities? I know we may need to do an extra train trip in there. I hope this is enough information.
Thank you!